Combined type-writing and computing machine.



- R. H. STROTHER.

COMBINED TYPE WRITING AND COMPUTING MACHINE, APPLICATION FILED I'EB.1B, 1910.

1,034,375. Patented July so, 1912,

2 $IIEET8SHEET 1.

VN/ITNEEEEE INVENTEIR:

W 1-!15 ATTURNEY R. H. STROTHER. COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLIGATION FILED FEBJB, 1910. 1,034,375. Patented July 30,1912.

' 2 SHEETS-SHEETK v INVENTUR:

mg MMM 1-115 ATTORNEY ROBERT H. STROTHER, 0F MoN'rcL m, ew

CORPORATION or NEW JERSEY.

COMBINED T PEWRIT G'AND COMJYEI'UTINGMA'CI-IINE.

I citizen of the United States, and resident of I Montclair, in the county of Essex and State of New Jersey, have invented certainnew and useful Improvements in Combined.

'lyperiting and Computing Machines, of

which the following is aspecification.

My invention relates to combined typefor its object to connect the inking mechanism of the typewriter withthat part of the computing machine which determines the character of the arithmetical operation to be performed, said connection being ofsuch a sort that the character of arithmetical operation performed by the computing mechanism will be indicated by the color of the printing.

In the specific embodiment of my invention shown in the present case, there. is a computing mechanism capable of the oper-' ations of addition and subtraction and the 'typewriting mechanism 'is provided with.

two different kinds of ink, such, for example, as blue ink and red ink; and means are provided in the typewriting mechanism for causing the printing to be done either in. blue or in red. I provide a connection between the computing mechanism and the typewriting mechanism of such sort that if the typewmiter beset to print in blue the computing mechanism will thereby be set to add and if the type'writing mechanism be set to print in red, then the computing mechanism will be set for subtraction; and, vice versa, if t-hecomputing mechanism be set for addition or subtraction the mere act of setting such computing.mechanism will at the same time set the typewriting mechanism for writing in blue and in red as the case may he.

In the accompanying drawings, Figure 1 is a front elevation, :with parts broken away, of a combinedtypewriting and computing means by which the ribbon mechanism of the typewriter is connected with the addand-subtract handle of the computing mechanism. Fig; 3 IS a fragmentary rear elevation on a reduced scale and showing some of the details of the ribbon vibrating mechanism of the typewriter."

I have not thought it necessary to illustrate in detail either the Reiningtonvisible typewriter with its bi-co-lor ribbon mechanism, or the VVahl adding attachment, as

"both of these machines are in common use and well-known in the art, not only sepa .rately but in combination, writing and computing machines, and it has The ribbon mechanismof the typewriter is shown in detail in the patent to O. B.

Yaw No. 920,410, dated May L, 1909; and one form of the Vahl adding machine is shown in detail in the patent to'J. C. \Vahl, No. 893,719, dated July 21, 1908-. Reference is made to these two patents for the precise detail construct-ion of those parts of, the mechanism which are not fully illustrated in the drawings. l

' The main frame of the Remington typewriter comprises a base 1, corner posts 2 and a top plate 3. Standards 4 rising from said top plate support stationary carriage rails 5, along which the carriage 6. is adapted to JERSEY,- IASSIGIEITOR, VBY1VIESNE ASSIG Nm- .MENTS, TO UNION 'TYPEWRITER. coMrANY, or JERSEY-.CITY, NEW; JERSEY;

travel toward the right or left, said carriage supporting the roller platen, 7. Printing' keys 8 are mounted on the forward ends of key-levers 10, Fig. 1, which are mounted in. the base of the typewriter and said key levers are ccnnectedby suitable linkages with front strike type bars 11, Fig. 2, each, of

said type bars having two types 12 and 13 mounted thereon. The platen 7 is mounted in a platen frame that is shiftable up and down and when said'platen 'is in its lower position the type 12 is effective for printing and 'when said platen isin its upper position the type'13 is the one that prints. The platen is shifted by case shifting, mechanism operated by; a case shift. key in afmanner well-known in the art. Thosetype bars 11 that are connected with numeral keys may,

:if desired, carry two figure types for example, the type bar connected with the key may have the type 12 and the type 13 g connected therewith, both fives butone of them larger than the other or differing from the other in style in some other respectthan in that of'size; and-the case shiftmechanism can be connected with thefadding machine. No such connection is provided in thepres ent instance however.

loo

The ribbon 14 is wound on two spools 15 and it is led from one spool to the other through suitable guides which include a ribbon vibrator 16 that normally stands in the position shown in Fig. 1, a little below the point at which the types strike the P19.- ten. The vibrator 16 is mounted to move up'and down in guides 17 by mechanism that is fully shown in the patent to Yaw above referred to and which is partially shown in Fig. 3 of the present case. In said figure, 18 is a cross bar that forms part of the platen shifting mechanism and moves up and down in unison with the platen but which has no motion in a right and left di- 'rection.

20 and 21 are brackets secured to fixed parts of the typewriter framework. A lever 22 is pivoted at 23 to the bracket 20 and this lever has a longitudinal curved slot 24' therein.

25 is a link connected with the universal barof the typewriter in such fashion that whenever a printing key is depressed this link is drawn downward to a definite ex tent. At its upper end the link 25 has a in 26 that-"passes through the slot 24 so t at when the link is operated it vibrates the lever 22 and the extent to which the lever is vibrateddepends upon the position of the pin 26 in the slot 24. When the parts are in the position shown in Fig. 3 an operation of the link 25 imparts a short stroke to the lever 22; but if said link be moved to the left in Fig. 3 nearer to the fulcrum of the lever, it would vibrate the lever to a greater extent at each key stroke. The vibrator 16 has a headedpin 27 projecting therefrom into a slot in the end of a lever 28, which lever is pivoted at to the end of the lever 22. The lever 28 is prolonged beyond the pivot 30 where it is pivoted at 31 to a link 32, the upper end ofwhich is pivoted at 33 to the end of a lever 34 which is fulcrumed at 23 to the fixed bracket 20. The opposite end of the lever 34' is pivoted at 35 to a link 36, the lower'end of which is pivoted to the shift bar 18. When the parts stand as shown in Fig. 3, an operation of the link 25 will draw down the ri ht-hand end of the lever 22 and elevate t e left-hand end of said lever, thus raising the pivot 30. The parts 32, 34 and 36 are held stationary so that the point 31 is the fulcrum of the lever 28 which acts as a lever of the third order and raises the ribbon vibrator high enough to bring the upper stripe a of the ribbon 14 to printing position. If the platen be shifted by elevating, the bar 18, the lever 34 will be rocked, depressing the fulcrum 31 of the lever 28 and raisingthe free end of said lever, and with it the ribbon vibrator to an elvtenp corresponding to that through which t 1e p *ten has been shifted. The construction 1s such that the normal relation of the The lower stripe of the ribbon can be' caused to cover the printing point at each key stroke-by shifting the link 25 toward the left in Fig. 3 to a suitable extent. In order to effect this the pin 26 projects into a vertical slot in a branch 37 of a bar 38, which bar is formed also with a horizontal slot 40 through which passes a screw 41 that is threaded into the stationary bracket 20 so that the bar 38 can be shifted to the left in Fig. 3, carrying the pin 26 and link 25 with it. In order to effect this shifting the link 38 is pivoted to the upper end of a lever 42 which is pivoted at 43 to the fixed bracket 21. The lower arm of the lever 42 is suitably connected at 44 to an arm 45 project ing upward from the rear end of a rock shaft 46 that is pivoted in the bracket 21. It will be seen that the vibrating mechanism can be set to print either blue or red by turning the rock shaft 46 one way or the other.

The shaft 46 extends to the front of the machine where it is pivoted in a bracket 47 secured by screws 48 to one of the front posts 2 of the frame of the machine; and said shaft has mounted on its forward end a finger button 50, by manipulating which the shaft can .be rocked. Just back of the bracket 47 said shaft has projecting therefrom a spring arm 51 having a conlcal pin 52 projecting forward therefrom and adapted to enter tapering depressions 53 formed in a rear face of the bracket 47, and acting as a detent to hold the shaft in either of its set positions. The bracket 47' has a branch 54 on the front face of which is a spot 55 colored red and a spot 56 colored blue. A pointer 57, mounted on the shaft 46, is adapted to coiiperate with these two colored spots to indicate whether the ribbon mechanism is set to print in blue or to print in red.

The stationary'parts of the Wahl adding attachment are, or may be, mounted on the top plate 3 of the machine by means of a bracket or brackets 58.

These stationary parts include an actuator 60 which is shown in the drawings with the casing in position;

Said actuator includes-a part 61 that proj ects farther upward and farther toward the front of the machine than the rest of said actuator. Said actuator includes devices.

which are operated by links 62 which 311 their upper ends extend into the actuator and at their lower ends are connected with the numeral keys of the typewriter. These devices are not shown in detail, partly because they are fully shown in the Wahl patent above referred to and partly because turns the numeral wheels 63, said numeral their detailed construction is immaterial, so far as the present invention is concerned. These devices operate a master wheel which wheels being mounted in one or more adding heads 64" adjustably mounted on a computer carriage 65, which, by means of rollers 66, is arranged to traverse a stationary rail 67. The computing carriage 65 is connected with the typewriter carriage 6 by means of devices 68 which may be of any suitable construct-ion so far as the-present invention is concerned. The computing mechanism comprises -a handle 7 0 which projects toward the front of the machine from a rod 71 that extends into the casing 61 where it controls certain change gearing 'which is described in detail .in the lVahl patent and by which the direction of rota-' tionof the master wheel can be reversed.

'The handle 70 and rod 71 are slidable to .alimited extent to the right or to the left and when these parts are in their righthand position the machine is set for addition,-and when they are in their left-hand position the machine is set for subtraction.

In the Wahl machine the handle 70 lies in a notch in .the upper edge of a plate 72 which projects to the left from the casing 61 and the extent of sliding motion of this handle and of the rod 71 is limited by the ends of said notch. The face of the plate 72 bears markings to indicate whether the machine is set for addition or subtraction. In the Wahl machine, as shown in the Wahl patent and as actually manufactured, this plate is formed with two notches into which the arm 70 is arranged to drop to retain said arm in either of its two set positions, but I prefer to omit these notches. In the specific embodiment thereof shown in the present instance, my connections from the typewriting machine to the adding machine consist in connections from the rod 71 which controls the operation of the adding mechanism, to the shaft 46 which controls the character or style of the printing done by the typewriter.

I'have shown the rod 71 prolonged toward the left so as to project beyond the casing of the actuator 60. A'bracket 73 is secured by screws 74 to the end of the actuator 60 and said bracket has pivoted therein the forward end of a shaft 7 5 which extends therefrom downward and toward the" rear, its rear end being pivoted in a bracket 7 6 secured by a screw 77 to the corner post 2 of the typewriter. The forward end of the shaft 7 5 has an arm 78 projecting thereshaft 46. The construct-ion is such that when said shaft 46 is turn d to the position shown in Fig. 1 to cause the ribbon to print from the upper or blue stripe a thereof, the rod 71'is automatically moved toward the right to set the adding machine foraddition; and when the shaft '46 is turned to bring the red stripe of the ribbon into use, the rod '71 is automatically moved toward the leftto set the computing mechanism for subtraction; and vice versa, if the handle 70 be moved to the right or to the left to set the adding machine for addition or subtraction, the ribbonmechanism will be automatically set to print blue or red, according to the setting of the adding machine. Both the shaft 46 and the rod 71 are yieldingly retained in either of'their set positions by the tapered pin 52 engaging in the tapering depressions 53. The arm 70 may have a lug s4. lying behind the plate 72 to prevent turning of the rod 71.

A result of the described connection between the two machines is that whenever the computing machine is set for addition the corresponding numbers will be printed in blue and whenever said computing machine is set for subtraction the corresponding numbers will be printed in red; and this is not left to the thoughtfulness of the operator but takes place automatically. The printing thus shows with certainty whether any given number was added or subtracted.

In the Wahl machine the register is cleared by set-ting the machine for subtraction and copying the total. Said total is thus subtracted from itself and if the copying is correctly done the register wheels are brought to zero. It follows therefore that tha totals will be automatically printed in re The herein described connection between the typewriting and computing machines is of advantage both as a- Safegua'rding device to insure that operations indicated by the printing have actually been performed in the computing mechanism, and they are also of advantage as a matter of convenience. It is customary in using these machines to write subtracted numbers and totals in red but it has heretofore been necessary to ma nipulate both the button 50 and the handle 7 0 in order to do this. By these connections the operation of either of these devices operates the other without engaging either the time or the attention of the operator.

What I claim as new and desire tosecuri by Letters Patent, is 2- 1.'In a combined typewriting and computing machine, the combination with the typewriter ribbon mechanism comprising a hand operated rock shaft for changing the colorof the printing, and the computing machine including a slide movable by hand to change; the character oi arithmetical eration, of a connecting rock shaft having one arm connected to said rock shaft oi v the ribbon mechanism andanother arm con- K nectedto said slide;

2. In a. combined typewriting and com puting machine, the combination with thetypew-riter ribbon. mechanism comprising a part movable by hand to two positions to puting machine, the combination with. the typewriter ribbon mechanism comprising a.

hand operated rock shaft for changing the emu-.0: mi ame may he owns color of the printing, mechanism including a part mova is by hand to change the character of arithmetical operation, of a connecting. rock shaft set at an angle. with said hand operated rock shaft, an arm on said connecting rock shaft connected with said movable part, a secondarm on said connecting rock shaft, and an arm onsaid hand operated rock shaft interlockin with said second arm.

i ned at the, borough of Manhattan, cit v E hiaw- York, in the county of New Yor State of New York this 17th day of February, A 1).. 1. 910.

ROBERT H. STROTHER.

Witnesses:

V M. F. I-Imwrrwnnmz,v CHARLES E. SMITH.

min cent emmhy' alikeuine the Commissioner of Patents.

Walkman Di 01" and. the com guting 2o 

